Journal ArticleDOI
A Literature Review of Poly(Lactic Acid)
TLDR
In this article, a literature review is presented regarding the synthesis, and physicochemical, chemical, and mechanical properties of poly(lactic acid)(PLA), with an orthorhombic unit cell.Abstract:
A literature review is presented regarding the synthesis, and physicochemical, chemical, and mechanical properties of poly(lactic acid)(PLA). Poly(lactic acid) exists as a polymeric helix, with an orthorhombic unit cell. The tensile properties of PLA can vary widely, depending on whether or not it is annealed or oriented or what its degree of crystallinity is. Also discussed are the effects of processing on PLA. Crystallization and crystallization kinetics of PLA are also investigated. Solution and melt rheology of PLA is also discussed. Four different power-law equations and 14 different Mark–Houwink equations are presented for PLA. Nuclear magnetic resonance, UV–VIS, and FTIR spectroscopy of PLA are briefly discussed. Finally, research conducted on starch–PLA composites is introduced.read more
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Polylactic Acid Technology
TL;DR: Polylactic acid is proving to be a viable alternative to petrochemical-based plastics for many applications It is produced from renewable resources and is biodegradable, decomposing to give H2O, CO2, and humus, the black material in soil as mentioned in this paper.
Journal ArticleDOI
Processing technologies for poly(lactic acid)
TL;DR: In this paper, structural, thermal, crystallization, and rheological properties of PLA are reviewed in relation to its converting processes, including extrusion, injection molding, injection stretch blow molding and casting.
Journal ArticleDOI
Poly(lactic acid) modifications
TL;DR: In this article, the advantages, limitations, production methods, and applications of unmodified poly(lactic acid) or polylactide (PLA) are discussed, as well as various bulk and surface modification strategies used to date.
Journal ArticleDOI
Biodegradable polymers and their layered silicate nanocomposites: In greening the 21st century materials world
TL;DR: A review of recent developments in preparation, characterization, properties, crystallization behaviors, melt rheology, processing, and future applications possibilities of biodegradable polymers and their layered silicate nanocomposites can be found in this paper.
Journal ArticleDOI
Poly-Lactic Acid: Production, Applications, Nanocomposites, and Release Studies.
TL;DR: The linkage of a 100% bio-originated material and nanomaterials opens new windows for becoming independent, primarily, of petrochemical-based polymers and, secondarily, for answering environmental and health concerns will undoubtedly be growing with time.
References
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Journal ArticleDOI
A method for estimating both the solubility parameters and molar volumes of liquids
TL;DR: In this paper, an indirect method of estimating the solubility parameter of high molecular weight polymers is proposed, which is based on group additive constants, but is believed to be superior to Small's method for two reasons: (1) the contribution of a much larger number of functional groups have been evaluated, and (2) the method requires only a knowledge of structural formula of the compound.
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Biodegradable polymers for use in surgery—polyglycolic/poly(actic acid) homo- and copolymers: 1
D.K. Gilding,A.M. Reed +1 more
TL;DR: In this paper, the historical development of polyglycolic acid (PGA) and polylactic acid (PLA) polymers and copolymers for use in surgery is set down.
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Stereocomplex formation between enantiomeric poly(lactides)
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Large-scale production, properties and commercial applications of polylactic acid polymers
TL;DR: In this paper, the authors discuss the various technologies being used to produce polylactic acids and how monomer stereochemistry can be controlled to impart targeted utility in the final polymers.
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Preparation and characterization of poly(l-lactic acid) foams
Antonios G. Mikos,Amy J Thorsen,Lisa A Czerwonka,Yuan Bao,Robert Langer,Douglas N. Winslow,Joseph P. Vacanti +6 more
TL;DR: In this article, a particulate-leaching method was developed to prepare highly porous biodegradable polymer membranes, which involved the casting of polymer/salt composite membranes followed by the dissolution of the salt.